編輯推薦
考試輔導(dǎo)
1.龍膽 根含裂環(huán)烯醚萜甙類苦味成分:龍膽苦甙(gentiopicroside),當(dāng)藥苦甙(swertiamarin),當(dāng)藥甙(sweroside),苦龍膽酯甙(amarogentin),痕量苦當(dāng)藥酯甙(amaroswerin);苦甙總含量可高達(dá)7.33%,而龍膽苦甙含量可達(dá)6.34%。生物堿:龍膽堿即秦艽堿甲(gentianine0.05%,龍膽黃堿(gentioflavine)。
2.條葉龍膽 根含裂環(huán)烯醚萜甙類苦味成分:龍膽苦甙,當(dāng)藥苦甙,當(dāng)藥甙,苦龍膽酯甙,痕量苦當(dāng)藥酯甙;苦甙總含量可達(dá)4.35%,而龍膽苦甙含量為4.15%。
3.三花龍膽 根含裂環(huán)烯酸萜類成分:龍膽苦甙,當(dāng)藥苦甙,當(dāng)藥甙,痕量苦當(dāng)藥酯甙;苦甙總含量為3.95%,而龍膽苦甙含量為3.66%。還含三花龍膽甙(TCMLIBifloroside)。
4.滇龍膽 根含裂環(huán)烯醚萜甙類苦味成分:龍服苦甙,當(dāng)藥苦甙,當(dāng)藥甙,痕量苦龍膽酯甙,痕量苦當(dāng)藥酯甙;苦甙總含量5.10%,龍膽苦甙含量5.01%。地上部分含龍膽堿,秦艽堿乙(gentianidine),秦艽堿丙(gentianal),β-谷甾醇(β-sitosterol)。